Suitable for use in industrial units, workshops, warehouses, showrooms, shops and stores, schools, gymnasiums, health centres, hospitals, churches Built in self test facility and LED charging indicator LED replacement for 2x20W halogen twin spots High quality polycarbomate housing with polycarbonate heads and prismatic diffusers 20mm conduit entries on the sides and the back, Key hole surface mounting slots Provides 3 hour emergency discharge duration High quality LifFePo4 battery with 3 year warranty